Well, You mentioned that you were fine and no worries yet you still had an anxiety attack. It sounds to me like you could have some stressful event in your past that you never entirely 'accepted'(Sorry if it brings back bad memories). I think that is what brought mine on because I basically had the same thing as you not a worry in the world and then out of no where I feel horrible.
All of those symptoms you describe definately sound like anxiety attacks and this has already been stated but it can in no way kill you - No one has EVER died from one. Perhaps the first step to recovery is completely accepting the symptoms as being anxiety and I mean without a doubt. That is what many here are still working on total acceptance since it basically makes you into a hypcondriac (myself included). One thing I recommend you completely stay away from is looking up diseases since it will just make you think you have that when you don't - The doctors already tested you!
Worrying about the symptoms are just going to make them worse because anxiety attacks are basically caused by worrying (stress related stuff). Now that may sound impossible but you have to remember they cannot hurt you and I'm not sure if you have had the feeling like you were going to pass out but I have had probably 30 or so attacks and I have never passed out so nothing to worry about there.
Another step in recovery is not to let in control you. Do the things you want to do which doesn't necessarily mean spend all day with a friend you could go spend an hour or so with them. At first it will be hard to be away from home and not think about anxiety but it will get better as you do it trust me. Also even when you have the chest tightness and stuff try to sleep in your own bed, at worst go and watch tv for a while until the symptoms go away because as you stay away from places due to anxiety attacks you mind will get the thought of 'I have to stay away from here or I will have an anxiety attack'. Which is 100% false unless you decide to worry about it but as stated before you have no reason to.
Truthfully you are one of the lucky ones since you have only had it for a month and have admitted the problem it is. There are people here that have it for many monthes and\or years before they admit it! Since you have admitted your problem so early in it I guarentee you will be able to make a quick recovery. I had mine for 2 monthes and I went from having anxiety attacks just about every day to none in 3 weeks (besides I still have a little chest tightness but it doesn't bother me anymore).
To answer the few last questions -
Do u think there is something seriously wrong with me? Nope just anxiety
How can anxiety make me feel this bad? The magic powers of anxiety I suppose it can do pretty amazing things to the body can't it?
I feel so alone and hopeless right now...no one knows how i feel. - Trust me your not alone there are probably hundreds here and many hundreds of thousands in the world with it.
Last few things that might help are exercise (relieves stress), and eating health (relieves stress and makes you more confident, or so I believe)
Sorry for the very long post but I saw you have only had it a month and I know you can recovery from it so I wanted to give you a lot of information so it will make it as easy as possible, any more questions just ask - I promise not to make a huge post about it.